Du Cheng, the criminal police captain of the Beijiang Branch, is a young veteran policeman who is usually serious and serious in handling cases.Du Cheng was recently investigating a case involving the corpse of a man with a duffel bag. In order to make Director Zhang believe his inference, he even immersed himself in the bathtub for an experiment.Police officer Jiang Feng went to Du Cheng to report that the police station received a report.

A dead female was found in Linglong Apartment. No other findings were found at the scene except a missing mobile phone.A delivery boy claimed that he had seen the murderer. Du Cheng took the delivery boy to check the surveillance video in the elevator, and finally they found out that the murderer entered a residential building.

Illustrator Shen Yi is very accomplished in painting, and his analysis of characters is very accurate from the inner to the outer appearance.Shen Yi, who was a teacher at the police academy, was in class. At this time, Director Zhang of the Beijiang Branch called and asked Shen Yi to help draw a portrait. Shen Yi drew the murderer's appearance based on the delivery boy's description, but the delivery boy felt that it was not completely similar., Shen Yi carefully asked the takeaway boy about the angle from which he observed the murderer, and finally he drew a frontal portrait of the murderer.

Director Zhang asked Du Cheng to wait for the portrait downstairs, but Du Cheng did not believe that the portrait would help him at all.Du Cheng asked the police officers to investigate separately. At this time, the murderer noticed the abnormality and was about to leave.The murderer disguised himself as a disabled person in an attempt to get away, but was spotted by Du Cheng who accosted him.The murderer fled, and Ducheng chased him all the way without even caring about being hit by a car.The murderer fled to a dead end, and Du Cheng subdued him.

Director Zhang of Beijiang Branch is a capable policewoman with a straightforward personality and cherishes talents.The case was solved, Director Zhang called to inform Shen Yi that he could come to work in the Beijiang Branch.Preliminary interrogator Lao Yan was experienced. He quickly learned that the murderer was hired to kill the deceased. According to the mobile phone communication information recovered by the technical team, Du Cheng knew the real culprit who hired the murderer. Before he finished eating, heLead the police officers to arrest him.

Seven years ago, Shen Yi was already well-known for his portrait ability. A woman wearing sunglasses came to him for a portrait. Shen Yi successfully drew the appearance of the man in the photo thirty-five years later based on a photo of her when she was young.This man was Lei Yifei, the captain of the Criminal Police Team of Beijiang Branch at that time. The murderer found Lei Yifei with the portrait and killed him. Du Cheng, as Lei Yifei's apprentice, rushed to the scene of dumping the body and was extremely sad.The portrait left at the scene led Du Cheng to find Shen Yi. He wanted Shen Yi to draw the woman's face, but Shen Yi just couldn't draw it.The case has not been solved so far, which not only makes Du Cheng unable to let go, but also Shen Yi has been feeling trapped by it.

Shen Yi went to the police station to report that Director Zhang gave him the office of Captain Zeng Lei. When Du Cheng learned about this, he went to Director Zhang to argue.Director Zhang hoped that Du Cheng would stop being so brooding. Du Cheng took off his work permit and proposed to be transferred from the Beijiang Branch.Another murder occurred in the jurisdiction, and Du Cheng had to put aside his grudges and continue investigating the case. Director Zhang asked him to take Shen Yi to the scene with him, but Du Cheng did not wait for Shen Yi to set off together.

Liang Yi, the owner and doctor of the plastic surgery hospital, died on the fifth floor of the plastic surgery hospital. It was his secretary who reported the case. According to the secretary, the first to fourth floors of this building are the plastic surgery hospital, and the fifth floor is Liang Yi’s private space.There was only one elevator, and no one except himself and Liang Yi had the authority to take the elevator to the fifth floor.The forensic doctor estimated Liang Yi's time of death based on the autopsy, and the cause of death was cyanide poisoning.Shen Yi found that the space on the fifth floor was wrong based on the structure of the house. Finally, Shen Yi found a secret room through a painting, and a large number of indecent videos were stored in the secret room.

In order to protect the privacy of the guests, the plastic surgery hospital did not install video surveillance. The police found footage of a woman entering and leaving the plastic surgery hospital during the time of Liang Yi's death from the video recorded by the camera outside the building. Unfortunately, the woman was wrapped too tightly.Unable to see the appearance clearly, Shen Yi wanted to use this scene to make a portrait.Shen Yi asked policewoman Li Han to be a model. Du Cheng felt that he was wasting his time. Shen Yi asked Du Cheng if he could use this office if he drew a portrait. Du Cheng was noncommittal.